Dioptometry is valid Scrabble Word

Is dioptometry a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is dioptometry valid Words with Friends?
Words with Friends NO

Definitions for DIOPTOMETRY in dictionary:

Words related to DIOPTOMETRY

dioptometries18
Find what other words can be done using letters: "dioptometry"
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